pm3.13 - Metamath Proof Explorer

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Theorem pm3.13 522

Description: Theorem *3.13 of [WhiteheadRussell] p. 111. (Contributed by NM, 3-Jan-2005.)

**Assertion**
Ref	Expression
pm3.13	$/\$ $\/$

**Proof of Theorem pm3.13**
Step	Hyp	Ref	Expression
1		pm3.11 520	. 2 $\/$ $/\$
2	1	con1i 144	1 $/\$ $\/$

Colors of variables: wff setvar class

Syntax hints:

wn 3

wi 4 $\/$ wo 383 $/\$ wa 384

This theorem was proved from axioms: ax-mp 5 ax-1 6 ax-2 7 ax-3 8

This theorem depends on definitions: df-bi 197 df-or 385 df-an 386

This theorem is referenced by: ifcomnan 4137 suc11 5831 naim1 32384 naim2 32385 tsbi1 33940 vk15.4j 38734 vk15.4jVD 39150